- Install the screen case of the Tensioned Descender Electrol separate from the screensurface during the rough-in stages of construction.- Order the Screen Surface Assembly at a later stage and complete the installation duringthe finishing stage preventing any damage.- The Screen Surface Assembly includes the bottom panel of the screen, motor andscreen surface.- The steel cables of the Projecta Easy Serviceability System easily connect theScreen Surface Assembly to the case ensuring a quick installation.- Order the case first and decide the aspect ratio and screen surface at a later stage ensuringoptimal flexibility.